Do i just play the licks he used on any part of a scale box? But when i do this some notes have to extended and wouldnt fit into the box as it should (like if you were to use the 1st, 2nd and 4th finger you may have to adapt to using the 1st, 2nd and 3rd finger because theres a note gap in the scale box).

Basically how do you improvise using licks (could you give an example using a scale)?

And most important is....to be ABLE to improvise! There is no book like: "Improvise like Paul Gilbert!" so nobody except you yourself can teach you to do it.

Listen how he creates his solos, learn his lick, mix them, learn his songs...and remember that if you want to play like him you will actually copy him so best way is to be inspired by him but put a lot of yourself in and create your own style/sound.

Have fun man!

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"It isn't how many years you have been playing, it's how many hours." -- Prashant Aswani